Territory



2 Sheets-Sheet 1.

(No Model.)

H. S. BONNELL.

THRASHING MACHINE.

6. M 9 w n 0 4, E w 5 n W e n P W m y W aw M WM WM -o W a EGHMMM.PHOTO-UTHU.WASHINGTO 2 Sheets-Sheet 2.

Patented Feb. 4, 1896.

H. s. BONNELL. THRASHING MACHINE.

wifi esscs I Nrrnn STATES ATENT OFFIC THRASHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 553,894, dated February4, 1896.

Application filed March 20, 1895.

To aZZ whom it may concern:

Be it known that I, HARvEY S. BoNNELL, a citizen of the United States,residing at Guthrie, in the county of Logan and Territory of Oklahoma,have invented a new and useful 'lhrashinghlachine, of which thefollowing is a specification.

This invention relates to certain new and useful improvements in theconstruction of thrashing-machines, and has for its object to provide amore rapid and efficient separation of the grain from the chaff andstraw and a thorough and more effective cleaning of the same, with lessliability of waste from blowing the grain over, than is possible withsimilar machines as heretofore constructed.

The improvement consists in combining with a thrashing-machine ofordinary construction a fan to co-operate with the fan usually providedand to dispose the same with reference to the separating-screens and theshoe, and to improve the general construction of the machine whereby theparts are compactly arranged'so as to attain the desired results in athorough and satisfactory manner.

The improvement also consists of the novel features and peculiarconstruction and combination of the parts, which hereinafter will bemore fully described and claimed, and which are shown in theaccompanying drawings, in WhlCl1--- Figure 1 is a side elevation of athrashingmachine embodying the invention, the near side being removedand parts shown in section. Fig. 2 is a section on the line X X of Fig.3, looking to the left, as indicated by the arrow. Fig. 3 is a sectionaldetail view on a larger scale, showing the ordinary fan, the auxiliaryfan, the shoe, the rear portion of the conveyer, and the partsimmediately connected therewith.

The thrashing-machine in its general construction comprises the usualparts, consisting of the cylinder 1, concave 2, beater 3, grates 4 and 5beneath the cylinder and beater, straw-rack 6, conveyer 7, shoe 8,grain-auger 9, tailings-auger 10, stacker 11, fan 12, elevator 13, andtailings-spout 14:.

The auxiliary or supplemental fan 15 is considerably smaller than theordinary fan 12, and is located nearer the front end of the mathine, andhas a spout 16, which curves up- Serial No. 542,517. (No model.)

wardly and rearwardly over the fan 12. The fans 15 and 12 are ofordinary construction and disposed in approximately the same horizontalplane.

A long lip-sieve 17 is located at the rear end portion of the conveyer 7immediately over the shoe 8, and an inclined lip-sieve 18 is arranged atthe front end of the sieve 17 and over the discharge-spout of the fan12. The inner ends of the sieves 17 and 18 are sustained by a support19. The lip-sieves 17 and 18 are formed from sheet metal, which have theopenings formed therein by punching lips in the ordinary manner commonin the construction of sieves for this class of machinery. An incline 20is provided at the forward end of the shoe 8 and immediately below thesieve 18, and is designed to guide the grain falling thereon from thesieve 18 into the shoe.

A piece of sheet metal 21 is located at the upper end of the incline 20and between it and the end of the spout 16, and is designed to preventthe grain passingover the front edge of the incline 20. A block 22 isinterposed between the side rail and the support for the rear end of theconveyer to elevate the latter a sufficient distance to admit of thespout 16 coming between its lower side and the top of the fan 12.

There will be one block, 22, for each side of the machine, and inaddition to raising the rear end portion of the conveyer 7 it alsoserves to raise the rear end of the straw-rack 6, thereby preventing thegrain from passing over the rear end of the latter with the straw.

On reference to Fig. 2 it will be seen that the shaft 23 has crankportions 24 near its ends, to which the rods 25 are attached, by meansof which motion is imparted to the straw-rack and conveyer in the usualmanner. The auxiliary fan15 is of such length as to come between thecrank portions 24, but the spout 16 will be spread at its delivery endso as to occupy the full width of the ma chine and deliver the blast ofair upon the full width of the sieves 18 and 17.

In its general operation the machine does not differ materially fromothers of similar construction until the grain is delivered from theconveyer onto the sieves 17 and 18, when it is met by the blast of airfrom the auxiliary fan 15, which carries off the bulk of the chafi andother light foreign matter. The grain upon the sieves l7 and 18, and infalling from being applied to separators now in use, in

the same onto the shoe and incline 20, is su bjected to the blast fromthe auxiliary fan 15, and is not acted upon by the blast from theordinary fan 12 until it reaches the shoe 8.

From the foregoing it will be seen that the two fans 12 and 15 actindependently, but unitedly effect a unitary result and thoroughly andeffectually clean the grain from all light and foreign matter. Theblasts from each of the fans can be so regulated as not to blow thegrain from the sieves, which would be the result if the two fanscombined their blasts and acted on the grain at one operation. It willbe seen that the blast from the fan 15 treats the grain before thelatter reaches the shoe and that the rain in its nassa e throu h 7 G I'23 t! the shoe is subjected to the blast from the ordinary fan 1;,which removes the last traces of chaff and light foreign substances.

It will be seen that the separating-sieves 17 and 1S incline in oppositedirections, the sieve 18 being considerably shorter and disposed at agreater inclination than the sieve l7, and coming opposite the spout 16receives the full blast of air from the fan and deflects the said blastthrough the passage formed between the sieve l8 and the inclines and 21and beneath the sieve 17 thereby carrying off the bulk of the chaff andlike particles. The forwardly and downwardly extending lips of thesieves 17 and 18 catch and direct a veyer and the top portion of theordinary fan,

portion of the blast upwardly through the sieves l7 and 18, therebylightening and loosening the grain so as to enable it the better to passthrough the sieves besides carrying off a quantity of the dust and lightmatter. The

inclines 20 and 21 catch what grain drops through the openings of thesieve 1S and direct it to the shoe, and these inclines are located abovethe spout of the ordinary fan 12 and prevent the grain lodging thereon.The provision of the blocks 22 admits of the invention that simple andeffective means are had for elevating the conveyer a sufficient distanceto admit of the curved spout 16 extending over the fan 12, so as todeliver the blast of air against the upwardly and forwardly inclinedsieve 18 to effect the initial cleaning of the grain.

By the present invention the auxiliary fan 15 can be applied to any ofthe usual makes of grain-separators without requiring a reconstructionof the same and at a slight cost above the expenditure required for theoperating parts.

The shoe 8 is vibrated from an eccentric on the shaft of the fan 12 inthe usual manner, and has connection with the said eccentric by means ofa rod 26 and a bracket-casting 27, the latter being provided 011 theshoe.

Having thus described the invention, what is claimed as new is- In athrashing-machine, the combination with the shoe, a fan arranged at thefront end of the shoe, and a conveyer provided with oppositely-inelinedlipped sieves, of blocks interposed between the side rails of the frameand the conveyer to elevate the latter a proper distance, and anauxiliary fan arranged in the front of the ordinary fan and having aspout curving rearwardly and upwardly and extending between the lowerside of the consubstantially as and for the purpose set forth. Intestimony that I claim the foregoing as my own I have hereto affixed mysignature in the presence of two witnesses.

HARVEY S. BONNELL. Witnesses:

JOHN P. GATES, J. E. PICKARD.

